The reg states, “For a consumer credit transaction secured by a dwelling, a loan originator organization must include on the loan documents described in paragraph (g)(2) of this section, whenever each such loan document is provided to a consumer or presented to a consumer for signature…” In your transaction Since the existing mortgage is not “provided to a consumer or presented to the consumer for signature” it appears the LO’s name and number is not needed. Different facts might result in a different answer.